JP2003313813A - Construction method of overhead crossing, overhead crossing and bridge pier structure - Google Patents
Construction method of overhead crossing, overhead crossing and bridge pier structureInfo
- Publication number
- JP2003313813A JP2003313813A JP2002123444A JP2002123444A JP2003313813A JP 2003313813 A JP2003313813 A JP 2003313813A JP 2002123444 A JP2002123444 A JP 2002123444A JP 2002123444 A JP2002123444 A JP 2002123444A JP 2003313813 A JP2003313813 A JP 2003313813A
- Authority
- JP
- Japan
- Prior art keywords
- pier
- girder
- foundation hole
- bridge pier
- central
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、立体交差施工方
法、立体交差および橋脚構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grade separation construction method, grade separation, and pier structure.
【０００２】[0002]
【従来の技術】従来、都市部における道路の平面交差
は、交通渋滞の大きな原因となっている。交差部の通過
交通と右折左折交通を立体化することにより、通過交通
を減速あるいは停止させることなく通過させることが可
能となる。都市部の幹線においては、これら立体交差を
アンダーパスあるいはオーバーパスのどちらかの方法で
施工している。2. Description of the Related Art Conventionally, level intersections of roads in urban areas have been a major cause of traffic congestion. By making the passing traffic at the intersection and the right-turning and left-turning traffic three-dimensional, it becomes possible to pass the passing traffic without decelerating or stopping. In urban urban trunk lines, these overpasses are constructed by either underpass or overpass.
【０００３】従来、オーバーパスの方法で立体交差を施
工するには、（１）交通を遮断して施工ヤードとし、そ
の場所で杭あるいはケーソンなどの基礎を構築した後、
橋脚・桁を構築する方法がある。また、最近では、
（２）道路上に架台を構築し、そこから橋脚・基礎を構
築する方法や、ブロック状のプレキャスト函体を組み立
てる急速施工法などが提案されている。Conventionally, in order to construct an overpass by the overpass method, (1) cut off the traffic to make a construction yard, and after constructing a foundation such as piles or caisson at that location,
There is a method to build a pier / girder. Also, recently
(2) A method of constructing a pedestal on the road and then constructing a pier / foundation from it, and a rapid construction method of assembling a block-shaped precast box have been proposed.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、（１）
の方法では、施工開始から完成までに、数年の期間を要
する。数年の施工期間中、車線規制によって交通を阻害
するため、さらなる交通渋滞が発生する。（２）の方法
では、道路上での架台の組み立て・撤去の期間が必要と
なる。[Problems to be Solved by the Invention] However, (1)
With the method, it takes several years from the start of construction to completion. During the construction period of several years, traffic congestion is obstructed by lane regulation, which causes further traffic congestion. The method (2) requires a period for assembling and removing the gantry on the road.
【０００５】本発明は、このような問題に鑑みてなされ
たもので、その目的とするところは、基礎工事と桁製作
を同時に行うことで工期を短縮できる立体交差施工方
法、立体交差および橋脚構造を提供することにある。The present invention has been made in view of the above problems, and an object thereof is a grade-separation construction method, grade-separation and pier structure capable of shortening the construction period by simultaneously performing foundation work and girder production. To provide.
【０００６】[0006]
【課題を解決するための手段】前述した目的を達成する
ための第１の発明は、移動架台上で桁を作製する工程
（ａ）と、基礎孔内に橋脚を建て込んで構築する工程
（ｂ）と、前記移動架台を移動させ、前記橋脚の上方に
前記桁を配置する工程（ｃ）と、前記橋脚を前記基礎孔
から上昇させ、前記橋脚で前記桁を支持させる工程
（ｄ）とを具備することを特徴とする立体交差施工方法
である。The first invention for achieving the above-mentioned object is a step (a) of manufacturing a girder on a movable gantry and a step of building a bridge pier in a foundation hole ( b), moving the moving gantry to arrange the girder above the pier (c), and raising the pier from the foundation hole to support the girder on the pier. The method for constructing a grade separation characterized by comprising:
【０００７】工程（ａ）では、交通の遮断を最小限とで
きる位置に配置した移動架台上で桁を作製する。工程
（ｂ）では、橋脚計画位置に形成された基礎孔内に昇降
ジャッキを有する吊り治具を挿入し、昇降ジャッキで前
記吊り治具を下降させつつ、吊り治具上に橋脚を構築す
る。吊り治具は、例えば、複数の吊りロッドの下端部に
平板状の接続フレームを固定したものであり、各吊りロ
ッドに昇降ジャッキが設けられる。完成後の橋脚は、基
礎孔内に吊下げられた状態となる。In step (a), the girder is produced on a moving gantry placed at a position where traffic interruption can be minimized. In the step (b), a suspension jig having an elevating jack is inserted into the foundation hole formed at the pier planned position, and while the elevating jack lowers the suspension jig, a pier is constructed on the suspension jig. The suspension jig is, for example, one in which a flat plate-shaped connection frame is fixed to the lower ends of a plurality of suspension rods, and each suspension rod is provided with a lifting jack. The completed pier will be suspended inside the foundation hole.
【０００８】工程（ｃ）では、移動架台を用いて、基礎
孔内に建て込まれた橋脚の上方に桁を配置する。移動架
台は、例えば、架台の下端部にウォータキャスタやエア
キャスタを設けたものである。工程（ｄ）では、昇降ジ
ャッキを用いて、橋脚を上載した吊り治具を上昇させ、
橋脚に桁を支持させる。In the step (c), a girder is arranged above the bridge pier built in the foundation hole by using the movable mount. The movable mount is, for example, one provided with water casters and air casters at the lower end of the mount. In the step (d), the lifting jig is used to raise the suspension jig on which the pier is mounted,
Have the girders support the girders.
【０００９】第１の発明では、移動架台上で桁を作製
し、基礎孔内に橋脚を建て込んで構築した後、移動架台
を移動させて橋脚の上方に桁を配置する。そして、橋脚
を基礎孔から上昇させ、橋脚で桁を支持させる。In the first aspect of the present invention, a girder is produced on a moving gantry, a bridge pier is built in the foundation hole, and then the moving gantry is moved to arrange the girder above the pier. Then, the pier is lifted from the foundation hole and the girder is supported by the pier.
【００１０】第２の発明は、第１の発明の立体交差施工
方法で施工されたことを特徴とする立体交差である。A second invention is a grade separation characterized by being constructed by the grade separation construction method of the first aspect.
【００１１】第３の発明は、基礎孔と、前記基礎孔の開
口部に設けられた支持手段と、前記支持手段に固定され
た昇降手段と、前記昇降手段に保持されて前記基礎孔内
に吊り下げられた吊り治具と、前記吊り治具上に構築さ
れた橋脚とを具備し、前記昇降手段により前記吊り治具
を昇降させて、前記橋脚を前記基礎孔から出入すること
を特徴とする橋脚構造である。In a third aspect of the present invention, a foundation hole, a support means provided at an opening of the foundation hole, an elevating means fixed to the supporting means, and an elevating means held in the foundation hole. It is provided with a hanging jig and a bridge pier built on the hanging jig, and the lifting jig is moved up and down by the elevating means to move the bridge pier in and out of the foundation hole. It is a bridge pier structure.
【００１２】基礎孔は、橋脚計画位置の下方の地盤に掘
削される。支持手段は、例えば、筒状の支持枠と、支持
枠上部に設けられた支持ブラケット等である。支持手段
は、昇降手段と吊り治具を介して、橋脚や橋脚上に架設
される桁等の重量を支持する。昇降手段には、昇降ジャ
ッキ等を用いる。昇降ジャッキは、支持部材である支持
ブラケット等に固定される。吊り治具は、例えば、昇降
ジャッキに保持された複数の吊りロッドと、吊りロッド
の下端部に設けられたピア接続フレームから成る。橋脚
は、ピア接続フレーム上に作製される。昇降ジャッキを
用いて、吊り治具を基礎孔内部で昇降させることで、吊
り治具上に構築された橋脚が基礎孔から出し入れされ
る。The foundation hole is excavated in the ground below the planned position of the pier. The support means is, for example, a tubular support frame and a support bracket provided on the upper part of the support frame. The support means supports the weight of the pier or the girder installed on the pier via the lifting means and the hanging jig. A lifting jack or the like is used as the lifting means. The lifting jack is fixed to a support bracket or the like that is a support member. The hanging jig includes, for example, a plurality of hanging rods held by the lifting jack and a pier connection frame provided at the lower end of the hanging rod. The piers are made on the peer connection frame. By using the lifting jack to move the suspension jig up and down inside the foundation hole, the bridge pier constructed on the suspension jig is taken in and out of the foundation hole.
【００１３】第３の発明の橋脚構造は、第１の発明の立
体交差施工方法で、橋脚を昇降させるために使用され
る。The pier structure of the third invention is used for raising and lowering the pier in the method of constructing a grade separation according to the first invention.
【００１４】[0014]
【発明の実施の形態】以下、図面に基づいて、本発明の
実施例を詳細に説明する。図１は、立体交差道路１の立
面図を示す。図１に示すように、立体交差道路１は、中
央部桁７、斜路部桁９ａ、斜路部桁９ｂ、橋脚２７、橋
脚３３等で構成される。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 shows an elevation view of a grade separation road 1. As shown in FIG. 1, the grade separation road 1 is composed of a central part girder 7, an oblique part girder 9a, an oblique part girder 9b, a pier 27, a pier 33 and the like.
【００１５】図２は、移動架台１１上で中央部桁７を形
成する工程を示す図である。立体交差道路１を構築する
には、まず、路面３の下方の地盤５に適切な基礎工事を
施し、橋脚２７、橋脚３３の計画位置の下方に円筒状の
基礎孔１５を形成する。また、斜路部桁９ａの計画位置
の路面３上に移動架台１１を設置する。FIG. 2 is a view showing a step of forming the central part girder 7 on the movable frame 11. In order to construct the grade separation road 1, first, an appropriate foundation work is performed on the ground 5 below the road surface 3, and a cylindrical foundation hole 15 is formed below the planned position of the pier 27 and the pier 33. In addition, the movable base 11 is installed on the road surface 3 at the planned position of the slope portion girder 9a.
【００１６】移動架台１１は、中央部桁７や斜路部桁９
ａの製作時には桁製作架台として、移動時には移動架台
として使用される。移動架台１１は、下部にウォータキ
ャスタ１３を有し、中央部桁７や斜路部桁９ａを支持で
きる構造とする。移動時には、ウォータキャスタ１３に
作動媒体を注入しつつ、タイヤショベルあるいはウイン
チ等（図示せず）で移動架台１１を牽引する。The movable mount 11 includes a central girder 7 and an oblique part girder 9.
It is used as a girder manufacturing stand when manufacturing a and as a moving stand when moving. The movable gantry 11 has a water caster 13 at a lower portion thereof and has a structure capable of supporting the central girder 7 and the oblique part girder 9a. At the time of movement, while pouring the working medium into the water caster 13, the moving base 11 is pulled by a tire shovel, a winch or the like (not shown).
【００１７】図３、図４は、基礎孔１５の断面の立面図
である。図３、図４は、図２のＡ−Ａによる断面図を示
す。図２に示すように、移動架台１１を作業ヤードとし
て中央部桁７を形成すると同時に、図３、図４に示すよ
うに、基礎孔１５内部に橋脚２７、橋脚３３を構築す
る。FIGS. 3 and 4 are elevation views of the cross section of the foundation hole 15. 3 and 4 are sectional views taken along line AA of FIG. As shown in FIG. 2, the movable girder 11 is used as a working yard to form the central girder 7, and at the same time, as shown in FIGS. 3 and 4, piers 27 and 33 are built inside the foundation hole 15.
【００１８】基礎孔１５内部に橋脚２７、橋脚３３を構
築するには、図３に示すように、まず、基礎孔１５の覆
工セグメント１７の頂部上に、覆工セグメント１７より
大きな径を有する筒状の支持枠１９を取り付ける。支持
枠１９の下端面の開口部の径は、覆工セグメント１７の
内径と同じである。支持枠１９の上端部には、２つの支
持ブラケット２１を固定する。支持ブラケット２１は、
例えば、長方形の枠状の本体２０に三角形状の支持部材
２２が設けられる。支持部材２２は、本体２０の地盤５
と面する側の下部に設けられ、支持部材２２のうち水平
部材は支持枠１９に固定される。In order to construct the bridge pier 27 and the bridge pier 33 inside the foundation hole 15, first, as shown in FIG. 3, a diameter larger than that of the lining segment 17 is provided on the top of the lining segment 17 of the foundation hole 15. The tubular support frame 19 is attached. The diameter of the opening of the lower end surface of the support frame 19 is the same as the inner diameter of the lining segment 17. Two support brackets 21 are fixed to the upper end of the support frame 19. The support bracket 21 is
For example, a triangular frame-shaped main body 20 is provided with a triangular support member 22. The support member 22 is the ground 5 of the main body 20.
The horizontal member of the support member 22 is fixed to the support frame 19 at the lower part on the side facing the.
【００１９】２つの支持ブラケット２１の本体２０に
は、それぞれ２つの昇降ジャッキ２５が固定される。４
つの昇降ジャッキ２５は、それぞれピア吊りロッド２３
を保持し、昇降させる。ピア吊りロッド２３の下端部に
は、平板状のピア接続フレーム２９が固定される。支持
枠１９は、支持部材２２やピア吊りロッド２３等を介し
て、橋脚２７または橋脚３３と、架設される桁の重量を
支持する。Two lifting jacks 25 are fixed to the main bodies 20 of the two support brackets 21, respectively. Four
Each of the two lifting jacks 25 has a pier suspension rod 23.
Hold and raise and lower. A flat plate-shaped pier connection frame 29 is fixed to the lower end of the pier suspension rod 23. The support frame 19 supports the weight of the bridge girder and the bridge pier 27 or the bridge pier 33 via the support member 22 and the pier suspension rod 23.
【００２０】次に、ピア接続フレーム２９上に橋脚２
７、橋脚３３を構築する。橋脚２７（３３）は、下部か
ら順にロットごとに構築される。図３、図４に示すよう
に、橋脚２７（３３）の下部を構築する際には、１ロッ
ト構築するごとに昇降ジャッキ２５を用いてピア吊りロ
ッド２３、ピア接続フレーム２９、橋脚２７（３３）を
下降させる。Next, the pier 2 is mounted on the peer connection frame 29.
7. Build the pier 33. The pier 27 (33) is constructed for each lot in order from the bottom. As shown in FIGS. 3 and 4, when constructing the lower part of the pier 27 (33), the lifting jack 25 is used every time one lot is constructed to use the pier suspension rod 23, the pier connecting frame 29, and the pier 27 (33). ) Is lowered.
【００２１】図５はピアサドル部３１を設置した状態の
橋脚２７、橋脚３３の断面図を示す。基礎孔１５内部に
橋脚２７（３３）を建て込んで構築した後、図５に示す
ように、橋脚２７（３３）の上端にピアサドル部３１を
固定する。橋脚２７（３３）は、ピアサドル３１固定時
に、ピアサドル３１の上端が路面３と同じレベルになる
ようにする。FIG. 5 is a sectional view of the pier 27 and the pier 33 with the pier saddle portion 31 installed. After the bridge pier 27 (33) is built inside the foundation hole 15, the pier saddle portion 31 is fixed to the upper end of the bridge pier 27 (33) as shown in FIG. The pier 27 (33) is designed so that the upper end of the pier saddle 31 is at the same level as the road surface 3 when the pier saddle 31 is fixed.
【００２２】図６は、中央部桁７を橋脚２７上に配置す
る工程を示す図である。ピアサドル部３１の設置後、移
動架台１１を用いて中央部桁７を橋脚２７の上方へ移動
させ、図６に示す状態とする。前述したように、移動時
には、ウォータキャスタ１３に作動媒体を注入しつつ、
タイヤショベルあるいはウインチ等（図示せず）で移動
架台１１を牽引する。FIG. 6 is a diagram showing a process of arranging the central girder 7 on the pier 27. After the pier saddle portion 31 is installed, the center frame girder 7 is moved above the bridge pier 27 by using the moving base 11, and the state shown in FIG. 6 is obtained. As described above, at the time of movement, while injecting the working medium into the water caster 13,
The moving base 11 is pulled by a tire shovel, a winch, or the like (not shown).
【００２３】図７は移動時の移動架台１１の断面の概略
図を示す。移動架台１１は、架台１２と、ウォータキャ
スタ１３で構成される。ウォータキャスタ１３は、作動
媒体の注入管４５を有する本体３７と、本体３７の下部
に設けられた複数のキャスタバック４１からなる。キャ
スタバック４１は、本体３７からの作業媒体の注入口３
９と、開口部４３を有する。FIG. 7 is a schematic view of a cross section of the movable mount 11 during movement. The movable mount 11 is composed of a mount 12 and a water caster 13. The water caster 13 includes a main body 37 having an injection pipe 45 for the working medium, and a plurality of caster bags 41 provided in the lower portion of the main body 37. The caster bag 41 is provided with a work medium inlet 3 from the main body 37.
9 and an opening 43.
【００２４】本体３７の注入管４５に、矢印Ｂに示すよ
うに水を注入すると、キャスタバック４１が水で膨張す
る。同時に、キャスタバック４１の開口部４３から、矢
印Ｃに示すように水が流出し、隣接するキャスタバック
４１の間の圧力室３５に水が満たされる。圧力室３５内
部の水圧が、移動架台１１および中央部桁７の荷重を持
ち上げられる状態に達すると、矢印Ｄに示すように、水
が路面１とキャスタバック４１との間から均等に逃げて
いき、移動架台１１は路面１から浮いた状態となる。移
動架台１１は、路面１とキャスタバック４１との間に２
２ｍｍ以上程度の空間を確保した状態で牽引される。When water is injected into the injection pipe 45 of the main body 37 as shown by the arrow B, the caster bag 41 expands with water. At the same time, water flows out from the opening 43 of the caster bag 41 as shown by the arrow C, and the pressure chambers 35 between the adjacent caster bags 41 are filled with water. When the water pressure inside the pressure chamber 35 reaches a state where the load on the movable gantry 11 and the central girder 7 can be lifted, the water uniformly escapes from between the road surface 1 and the caster back 41 as shown by an arrow D. The mobile base 11 is in a state of floating from the road surface 1. The movable base 11 is provided between the road surface 1 and the caster bag 41.
It is towed with a space of at least 2 mm secured.
【００２５】このとき、例えば、中央部桁７の重量が１
２００ｔ、移動架台１１の重量が１００ｔの場合、移動
時の設置圧は約５ｔ／ｍ２となる。このように、ウォー
タキャスタ１３を有する移動架台１１により桁を移動さ
せると、荷重の分散が図れ、路面３を特別に養生する必
要がなくなる。At this time, for example, the weight of the central girder 7 is 1
When the pressure is 200 t and the weight of the movable base 11 is 100 t, the installation pressure during movement is about 5 t / m 2 . In this way, when the girder is moved by the movable base 11 having the water casters 13, the load can be dispersed, and it becomes unnecessary to specially cure the road surface 3.
【００２６】移動架台１１を、橋脚２７を建て込み構築
した基礎孔１５の間に配置し、本体３７への注水を停止
すると、キャスタバック４１は路面１に接地する。The caster back 41 is grounded on the road surface 1 when the movable base 11 is arranged between the foundation holes 15 in which the bridge piers 27 are built and constructed and the water injection into the main body 37 is stopped.
【００２７】図８は、ピアサドル部３１上に中央部桁７
を仮置きした状態の橋脚２７の断面図、図９は、中央部
桁７を正規の設置高さまで上昇させる工程を示す図であ
る。図５に示すピアサドル部３１の上方に中央部桁７を
配置した後、昇降ジャッキ２５を用いてピア吊りロッド
２３を上昇させ、図８に示すように、ピアサドル部３１
の上端に中央部桁７を仮置きする。そして、図９に示す
ように、ピアサドル部３１に上載した中央部桁７が正規
の設置高さに達するまで、ピア吊りロッド２３をさらに
上昇させる。FIG. 8 shows the center girder 7 on the pier saddle 31.
FIG. 9 is a cross-sectional view of the bridge pier 27 in the state where the tent is temporarily placed, and FIG. After arranging the central part girder 7 above the pier saddle part 31 shown in FIG. 5, the pier suspension rod 23 is raised using the lifting jack 25, and as shown in FIG.
Temporarily place the center girder 7 on the upper end of the. Then, as shown in FIG. 9, the pier suspension rod 23 is further raised until the central portion girder 7 mounted on the pier saddle portion 31 reaches the regular installation height.
【００２８】移動架台１１から橋脚２７への中央部桁７
の荷重の受けかえが完了した後、移動架台１１を斜路部
桁９ａの設置予定位置まで移動させる。The central girder 7 from the movable mount 11 to the pier 27
After the load is completely received, the movable base 11 is moved to the installation position of the ramp girder 9a.
【００２９】図１０は、移動架台１１上で斜路部桁９ａ
を形成する工程を示す図である。図１０に示すように、
中央部桁７を正規の設置高さに保持し、矢印Ｅ方向の交
通を確保した状態で、移動架台１１上に斜路部桁９ａを
形成する。斜路部桁９ａの完成後、昇降ジャッキ２５を
用いてピア吊りロッド２３を下降させ、橋脚２７を、再
度基礎孔１５の内部に吊下げる。FIG. 10 is a perspective view of a ramp 9 g on the movable base 11.
It is a figure which shows the process of forming. As shown in FIG.
While maintaining the center part girder 7 at a regular installation height and ensuring the traffic in the direction of the arrow E, the ramp part girder 9a is formed on the movable base 11. After the completion of the ramp girder 9a, the lifting jack 25 is used to lower the pier suspension rod 23, and the pier 27 is suspended inside the foundation hole 15 again.
【００３０】図１１は、基礎孔１５内に橋脚２７を吊下
げた状態の断面立面図である。図１１に示すように、橋
脚２７とピアサドル部３１は、基礎孔１５内部に配置さ
れ、橋脚２７に固定されたピアサドル３１上には中央部
桁７が上載される。また、橋脚３３を建て込み構築した
基礎孔１５でも、橋脚３３とピアサドル部３１とが基礎
孔１５内部に配置されている。FIG. 11 is a sectional elevation view showing a state in which the bridge pier 27 is suspended in the foundation hole 15. As shown in FIG. 11, the bridge pier 27 and the pier saddle portion 31 are arranged inside the foundation hole 15, and the central girder 7 is mounted on the pier saddle 31 fixed to the pier 27. Further, also in the foundation hole 15 in which the bridge pier 33 is built and constructed, the bridge pier 33 and the pier saddle portion 31 are arranged inside the foundation hole 15.
【００３１】図１１に示す位置まで中央部桁７を下降さ
せた後、移動架台１１を用いて斜路部桁９ａの位置を調
整する。斜路部桁９ａは、図１１に示すように、橋脚２
７のピアサドル部３１と橋脚３３のピアサドル部３１の
上方に配置される。After lowering the central girder 7 to the position shown in FIG. 11, the position of the oblique part girder 9a is adjusted by using the moving base 11. As shown in FIG. 11, the diagonal part girder 9a is a bridge pier 2
7 is arranged above the pier saddle part 31 and the pier 33 of the pier saddle part 31.
【００３２】図１２は、中央部桁７および斜路部桁９ａ
を上昇させる工程を示す図である。図１１に示す状態か
ら、図８に示す要領で、昇降ジャッキ２５を用いてピア
吊りロッド２３を吊上げ、橋脚２７、橋脚３３を上昇さ
せる。斜路部桁９ａの荷重を移動架台１１から橋脚２７
と橋脚３３に受けかえた後、さらに、橋脚２７、橋脚３
３をそれぞれ所定の位置まで上昇させ、中央部桁７およ
び斜路部桁９ａを架設する。FIG. 12 shows the central girder 7 and the oblique part girder 9a.
It is a figure which shows the process of raising. From the state shown in FIG. 11, the pier suspension rod 23 is lifted using the lifting jack 25 and the piers 27 and 33 are raised in the manner shown in FIG. The load of the diagonal part girder 9a is moved from the moving platform 11 to the pier 27.
After receiving it to the pier 33, further pier 27 and pier 3
3 are respectively raised to a predetermined position, and a central girder 7 and a ramp girder 9a are installed.
【００３３】なお、斜路部桁９ｂは、他の固定架台等を
用いて設置予定位置の路面３上に斜路部桁９ａと並行し
て形成しておき、中央部桁７および斜路部桁９ａと同時
に架設する。立体交差道路１のその他の部分は、斜路部
桁９ａ、９ｂや中央部桁７の製作や架設と並行して構築
しておく。The oblique road girder 9b is formed in parallel with the oblique road girder 9a on the road surface 3 at the planned installation position by using another fixed mount or the like, and the central part girder 7 and the oblique road girder 9a are formed. Install at the same time. The other portions of the grade separation road 1 are constructed in parallel with the manufacturing and erection of the ramp portion girders 9a and 9b and the central portion girder 7.
【００３４】移動架台１１や、斜路部桁９ｂの作製に使
用した固定架台等は、適切な時期に撤去する。また、橋
脚２７、橋脚３３を路面３上に設置した後、基礎孔１５
にコンクリートを打設する。なお、支持ブラケット２
１、ピア吊りロッド２３等は適宜撤去する。最後に、橋
面工や仕上げ工を施し、立体交差道路１を完成する。The movable mount 11 and the fixed mount used for manufacturing the ramp girder 9b are removed at an appropriate time. In addition, after installing the piers 27 and 33 on the road surface 3, the foundation hole 15
Pour concrete into the. The support bracket 2
1, the pier suspension rod 23, etc. are removed as appropriate. Finally, bridge work and finishing work are performed to complete the grade separation road 1.
【００３５】このように、本実施の形態では、基礎孔１
５の内部に橋脚２７、橋脚３３を建て込んで構築しつ
つ、移動架台１１上で中央部桁７を形成する。基礎や橋
脚の施工と桁製作を同時に行うことで、工期を短縮でき
る。Thus, in this embodiment, the foundation hole 1
The bridge girder 27 and the bridge pier 33 are built inside the building 5, and the central girder 7 is formed on the moving base 11. The construction period can be shortened by simultaneously performing the foundation and bridge pier construction and girder production.
【００３６】また、移動架台１１を用いて中央部桁７を
橋脚２７の上方へ移動させた後、昇降ジャッキ２５を用
いて、基礎孔１５の内部に立て込んだ橋脚２７を吊上げ
る。そして、中央部桁７を橋脚２７上に仮設置した状態
で、斜路部桁９ａを形成する。橋脚２７、橋脚３３を繰
り返し昇降可能な構造とし、作業ヤードで形成された中
央部桁７を上昇させた橋脚２７上に仮置きすることで、
中央部桁７の下方の通行止め期間を大幅に短縮できる。Further, after moving the central girder 7 above the bridge pier 27 using the moving base 11, the lifting jack 25 is used to lift the bridge pier 27 standing inside the foundation hole 15. Then, with the central part girder 7 temporarily installed on the bridge pier 27, the oblique part girder 9a is formed. The bridge pier 27 and the bridge pier 33 can be repeatedly moved up and down, and by temporarily placing the central girder 7 formed in the work yard on the raised bridge pier 27,
The suspension period below the central girder 7 can be significantly shortened.
【００３７】なお、本実施の形態では、中央部桁７と並
行して橋脚２７と橋脚３３を構築したが、橋脚３３の構
築時期はこれに限らず、中央部桁７と斜路部桁９ａ、９
ｂの架設までに構築が完了すればよい。また、中央部桁
７や斜路部桁９ａを形成する際の移動架台１１の配置位
置は、斜路部桁９ａの計画位置の路面３上に限らない。
立体交差道路１を構成する桁や橋脚等の部材数は、図１
に示す限りではない。さらに、移動架台１１のウォータ
キャスタ１３のかわりにエアキャスタを用いても良い。
この場合、作動媒体として水のかわりに気体を用いる。In this embodiment, the bridge pier 27 and the bridge pier 33 are constructed in parallel with the central portion girder 7, but the construction time of the pier 33 is not limited to this, and the central portion girder 7 and the oblique portion girder 9a, 9
The construction should be completed before the installation of b. In addition, the position of the movable gantry 11 when forming the central part girder 7 and the slope part girder 9a is not limited to the planned position of the slope part girder 9a on the road surface 3.
Figure 1 shows the number of members such as girders and piers that make up the grade separation road 1.
Not limited to. Further, an air caster may be used in place of the water caster 13 of the movable base 11.
In this case, gas is used as the working medium instead of water.
【００３８】[0038]
【発明の効果】以上、詳細に説明したように、本発明に
よれば、基礎工事と桁製作を同時に行うことで工期を短
縮できる立体交差施工方法、立体交差および橋脚構造を
提供できる。As described above in detail, according to the present invention, it is possible to provide a grade-separation construction method, grade-separation and pier structure which can shorten the construction period by simultaneously performing foundation work and girder production.
【図１】立体交差道路１の立面図[Fig. 1] Elevation view of grade separation road 1
【図２】移動架台１１上で中央部桁７を形成する工程を
示す図FIG. 2 is a diagram showing a process of forming a central part girder 7 on a movable base 11.
【図３】基礎孔１５の断面の立面図FIG. 3 is an elevation view of a cross section of the foundation hole 15.
【図４】基礎孔１５の断面の立面図FIG. 4 is an elevation view of a cross section of the foundation hole 15.
【図５】ピアサドル部３１を設置した状態の橋脚２７の
断面図FIG. 5 is a sectional view of the pier 27 with the pier saddle portion 31 installed.
【図６】中央部桁７を橋脚２７上に配置する工程を示す
図FIG. 6 is a diagram showing a process of arranging the central girder 7 on the pier 27.
【図７】移動時の移動架台１１の断面の概略図FIG. 7 is a schematic view of a cross section of the movable gantry 11 during movement.
【図８】ピアサドル部３１上に中央部桁７を仮置きした
状態の橋脚２７の断面図FIG. 8 is a cross-sectional view of the pier 27 with the central girder 7 temporarily placed on the pier saddle portion 31.
【図９】中央部桁７を正規の設置高さまで上昇させる工
程を示す図FIG. 9 is a diagram showing a process of raising the central part girder 7 to a regular installation height.
【図１０】移動架台１１上で斜路部桁９ａを形成する工
程を示す図FIG. 10 is a diagram showing a process of forming a ramp portion girder 9a on the movable mount 11.
【図１１】基礎孔１５内に橋脚２７を吊下げた状態の断
面立面図FIG. 11 is a sectional elevation view showing a state where the bridge pier 27 is suspended in the foundation hole 15.
【図１２】中央部桁７および斜路部桁９ａを上昇させる
工程を示す図FIG. 12 is a diagram showing a step of raising the central part girder 7 and the ramp part girder 9a.
１………立体交差道路 ７………中央部桁 ９ａ、９ｂ………斜路部桁 １１………移動架台 １３………ウォータキャスタ １５………基礎孔 １９………支持枠 ２１………支持ブラケット ２３………ピア吊りロッド ２５………昇降ジャッキ ２７、３３………橋脚 ２９………ピア接続フレーム 1 ………… Overpass 7 ......... Center girder 9a, 9b ......... Girder part girder 11 ………… Mobile platform 13 ... Water caster 15 ... Basic hole 19 ... Support frame 21 ... Support bracket 23 ………… Pier suspension rod 25 ………… Lifting jack 27, 33 ......... piers 29 ………… Peer connection frame
Claims (5)
と、 基礎孔内に橋脚を建て込んで構築する工程（ｂ）と、 前記移動架台を移動させ、前記橋脚の上方に前記桁を配
置する工程（ｃ）と、 前記橋脚を前記基礎孔から上昇させ、前記橋脚で前記桁
を支持させる工程（ｄ）と、を具備することを特徴とす
る立体交差施工方法。1. A step (a) of manufacturing a girder on a mobile gantry.
A step (b) of building and constructing a bridge pier in a foundation hole; a step (c) of moving the movable gantry to arrange the girder above the bridge pier; and raising the bridge pier from the foundation hole. And a step (d) of supporting the girder on the bridge pier.
ジャッキを有する吊り治具を挿入し、前記昇降ジャッキ
で前記吊り治具を下降させつつ前記吊り治具上に前記橋
脚を構築することを特徴とする請求項１記載の立体交差
施工方法。2. In the step (b), a hoisting jig having a lifting jack is inserted into the foundation hole, and the hoisting jig is lowered by the hoisting jack to build the pier on the hoisting jig. The grade separation construction method according to claim 1, wherein
前記吊り治具を上昇させることを特徴とする請求項２記
載の立体交差施工方法。3. The overpass construction method according to claim 2, wherein in the step (d), the lifting jig is raised by the lifting jack.
された立体交差施工方法で施工されたことを特徴とする
立体交差。4. A grade separation, which is constructed by the grade separation construction method according to any one of claims 1 to 3.
た吊り治具と、 前記吊り治具上に構築された橋脚と、を具備し、 前記昇降手段により前記吊り治具を昇降させて、前記橋
脚を前記基礎孔から出入することを特徴とする橋脚構
造。5. A foundation hole, a supporting means provided at an opening of the foundation hole, an elevating means fixed to the supporting means, and a suspension held by the elevating means and suspended in the foundation hole. A pier structure comprising: a hanging jig; and a pier constructed on the hanging jig, wherein the lifting jig is moved up and down by the elevating means to move the pier in and out of the foundation hole. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002123444A JP4040901B2 (en) | 2002-04-25 | 2002-04-25 | Three-dimensional intersection construction method and three-dimensional intersection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002123444A JP4040901B2 (en) | 2002-04-25 | 2002-04-25 | Three-dimensional intersection construction method and three-dimensional intersection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003313813A true JP2003313813A (en) | 2003-11-06 |
| JP4040901B2 JP4040901B2 (en) | 2008-01-30 |
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ID=29538733
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002123444A Expired - Fee Related JP4040901B2 (en) | 2002-04-25 | 2002-04-25 | Three-dimensional intersection construction method and three-dimensional intersection |
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| Country | Link |
|---|---|
| JP (1) | JP4040901B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006083519A (en) * | 2004-09-14 | 2006-03-30 | Kajima Corp | Construction method for grade separated crossing |
| JP2006233508A (en) * | 2005-02-23 | 2006-09-07 | Sankyu Inc | Transport method of heavy load |
| JP2008101394A (en) * | 2006-10-19 | 2008-05-01 | Katayama Stratec Kk | Prestressed concrete well and method of constructing bridge |
| JP2010037798A (en) * | 2008-08-05 | 2010-02-18 | Sumitomo Mitsui Construction Co Ltd | Multiple span continuous concrete bridge |
| CN102182140A (en) * | 2011-04-06 | 2011-09-14 | 上海朝田实业有限公司 | Hydraulic lifting type overpass |
| CN104018421A (en) * | 2014-05-29 | 2014-09-03 | 南京航空航天大学 | One-way spiral bridge |
| CN106894346A (en) * | 2017-04-28 | 2017-06-27 | 山西省交通科学研究院 | A kind of the continuous beam bridge construction method |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006083519A (en) * | 2004-09-14 | 2006-03-30 | Kajima Corp | Construction method for grade separated crossing |
| JP4519588B2 (en) * | 2004-09-14 | 2010-08-04 | 鹿島建設株式会社 | Three-dimensional intersection construction method |
| JP2006233508A (en) * | 2005-02-23 | 2006-09-07 | Sankyu Inc | Transport method of heavy load |
| JP4502388B2 (en) * | 2005-02-23 | 2010-07-14 | 山九株式会社 | Transporting heavy items |
| JP2008101394A (en) * | 2006-10-19 | 2008-05-01 | Katayama Stratec Kk | Prestressed concrete well and method of constructing bridge |
| JP2010037798A (en) * | 2008-08-05 | 2010-02-18 | Sumitomo Mitsui Construction Co Ltd | Multiple span continuous concrete bridge |
| CN102182140A (en) * | 2011-04-06 | 2011-09-14 | 上海朝田实业有限公司 | Hydraulic lifting type overpass |
| CN104018421A (en) * | 2014-05-29 | 2014-09-03 | 南京航空航天大学 | One-way spiral bridge |
| CN104018421B (en) * | 2014-05-29 | 2016-01-13 | 南京航空航天大学 | A kind of one-way spiral bridge |
| CN106894346A (en) * | 2017-04-28 | 2017-06-27 | 山西省交通科学研究院 | A kind of the continuous beam bridge construction method |
| CN115075149A (en) * | 2022-06-20 | 2022-09-20 | 中铁二局集团有限公司 | Construction method for erecting large downhill bridge by using guide-beam-free transportation and erection integrated machine |
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